Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a cane suitable for forming an optical fiber and a method of forming an optical fiber from the cane. SOLUTION: A core composition having about 20-30 wt.% P 2 O 5 is formed. An inner clad composition is formed on the outside surface of the core composition and core composition and the inner clad composition are consolidated into a preform having the core and the inner clad while substantially closing a center line hole of the preform. An outer clad is formed on the preform to define the cane. The cane can then be transformed into the optical fiber. COPYRIGHT: (C)2004,JPO
Abstract:
The disclosed invention includes an inventive drying agent. The drying agent includes at least one halide and at least one reducing agent. Preferably, the reducing agent includes a compound that will react with an oxygen by-product of the reaction of the halide and water, or the reaction of the halide and an impurity in the preform. The invention also includes a method of drying a soot preform. The method includes disposing the soot preform in a furnace. The furnace is charged with the drying agent which includes the halide and the reducing agent. Heat is then supplied to the furnace. Suitable drying agents for use in the disclosed invention include a mixture of Cl2 and CO; a mixture of Cl2, CO and CO2; and POCl3.
Abstract:
A passive temperature-compensated integrated optical component having an array of adjacent waveguides, and a slab waveguide located within a groove at an intermediate section of the array. The waveguides have an index of refraction that increases with increasing temperature, and the slab waveguide has an index of refraction that decreases with increasing temperature. The slab waveguide compensates for a temperature-induced change in the refractive index of the waveguides to maintain a generally constant optical path difference between the adjacent waveguides over a temperature range.
Abstract:
The present invention provides an athermalized organic-containing overclad integrated planar optical waveguide circuit device in which thermal induced shifting of channel wavelengths is minimized. The organic-containing overclad material is combined with a silica or doped silica glass material in the form of a local overclad, a bi-layer overclad, or a hybrid overclad. The organic-containing overclad material is a polymer or a sol-gel material.
Abstract:
A method of making an in situ shaped optical element on the terminal end of an optical fiber, and the resultant optical fiber component for manipulating light entering or exiting the terminal end of an optical fiber. The in situ shaped optical element is preferably an inorganic-organic hybrid sol-gel material which is adhered to the terminal end of the optical fiber and shaped in place to define an optical element or surface.
Abstract:
The invention relates to the manufacturing of a preform having at least one fluorine doped region. One method of the invention for producing the fluorinated preform includes heat treating a porous soot preform, the preform substantially devoid of any sintered glass layer, to a temperature of greater than about 1200 DEG C. The method further includes exposing the preform to an atmosphere comprising a fluorine containing compound, wherein the time and the temperature of said exposing step is controlled so that F comprises > about 1 wherein F is defined as Rmax/(D/k)1/2, wherein Rmax is the outer radius of the preform, D is the diffusion coefficient of the fluorine containing compound into the preform, and k is the reaction rate constant of the reaction between the fluorine and the soot, thereby controlling the radial penetration of fluorine into the preform. A second method includes depositing fluorine doped silica soot on a starting member to form a soot preform having at least one fluorine doped soot region and heating the soot preform at a rate of more than about 10 DEG C/min to a temperature of more than about 1300 DEG C. A third method includes heating a preform having at least one region of fluorine doped soot at a rate of more than about 10 DEG C/min to a temperature of more than about 1400 DEG C.
Abstract:
A UV light-curable composition comprises: (a) a first component, said first component being UV light-polymerizable polymer having a first index of refraction; and (b) a second component, the second component being UV light-polymerizable monomer having a second index of refraction, the second index of refraction being higher than said first index of refraction; wherein the first component polymerizes slower upon exposure to UV radiation than the second component.
Abstract:
The disclosed invention relates to the use of a specific drying agent in a process for drying glass soot preforms. The drying agent includes at least one halide and at least one reducing agent. Preferably, the reducing agent includes a compound that will react with an oxygen by-product of the reaction of the halide and water, or the reaction of the halide and an impurity in the preform. The method includes disposing the soot preform in a furnace, charging the furnace with the drying agent of halide and reducing agent and supplying heat to the furnace. Suitable drying agents for use in the process disclosed include a mixture of Cl2 and CO; a mixture of Cl2, CO and CO2; and POCl3: the latter being an example where the halide and reducing agent are embodied by a single compound.
Abstract:
pressionamento radial de fuligem para o revestimento de fibra ótica. um método e aparelho pra fazer uma pré-forma de fibra ótica. o aparelho tem uma parede externa e uma parede interna. a parede externa circunda a parede interna e a parede interna circunda uma cavidade interna do aparelho. uma haste de núcleo é depositada na cavidade interna depois que o material de vidro particulado, tal como uma fuligem de vidro é depositada na cavidade interna ao redor da haste de núcleo. a haste de núcleo tem pelo menos 10 por cento da fuligem de revestimento final já aplicada na mesma. uma pressão para fora radialmente é aplicada contra o material de vidro particulado para pressurizar o material de vidro particulado contra a haste de núcleo.